Invar, Invar 36, NILO 36 & Pernifer 36 / UNS K93600 & K93601 / W. Nr. 1.3912

Description: Invar (also know as Invar 36, NILO 36, Pernifer 36 and Invar Steel) is a low expansion alloy consisting of 36% Nickel, balance Iron. Invar Alloy exhibits extremely low expansion around ambient temperatures, making Invar Alloy particularly useful in applications where minimum thermal expansion and high dimensional stability is required, such as in precision instruments like optoelectronic devices, optical and laser benches, electronics, and other kinds of scientific instruments.

Chemistry By % Weight

C: 0.02%

Fe: Balance

Mn: 0.35%

Ni: 36%

Si: 0.2%

Typical Mechanical Properties

Ultimate Tensile Strength   104,000 PSI

Yield Strength             98,000 PSI

Elongation @ Break        5.5

Modulus of Elasticity       21,500 KSI

Typical Physical Properties

Density     0.291 lbs/cu in 

Melting Point    1425° C 

Electrical Resistivity @ RT    8.2 Microhm-cm

Thermal Conductivity @ RT   10.15 W/m-k

Available Product Forms:Pipe, tube, sheet, plate, round bar, forging stock and wire.